Building electronics into clothing is a major new concept, which opens up a whole array of multi-functional, wearable electro-textiles for sensing/monitoring body functions, delivering communication facilities, data transfer, individual environment control, and many other applications. Fashion articles will carry key pads for mobile phones and connections for personal music systems; specialist clothing will be able to monitor the vital life signs of new-born babies, to record the performance of an athlete's muscles, to call a rescue team to victims of accidents in adverse weather conditions. A team of distinguished international experts consider the technical materials and processes that will facilitate all these new applications.